On Monday 29 August 2005 16:28, Lewis Adam-CAL022 wrote: > Hi all, > > I am evaluating the Westwood protocol in the lab using NISTnet as an > emulator. So far I am seeing little to zero improvement of TCP > performance using Westwood as opposed to the Vegas implementation in the > kernel. We did a lot of tests like yours. Angelo's Westwood+ seems to perform much better on long TCP connections. Try to make a longer connection (i.e. 300-600 sec.) and see if something changes. Also you can try to enlarge tcp_wmem, as with such a delay you need more memory for TCP buffers. > Am I using a valid version of Westwood in this kernel? Is there anyway > to verify that it is running, aside from cat-ing the /proc files? > Anything in /var/log/messages or elsewhere? Or is this really the best > one can hope for with Westwood (e.g. 5% improvement)? I suggest you to take a closer look to the TCP variables, to see if your Westwood+ is performing as expected, adding some printk() or using the MultiTCP kernel patch, available at: http://sf.net/projects/multitcp Regards, -- Daniele Lacamera root at danielinux.net - : send the line "unsubscribe linux-net" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
